hainan/app/Models/BaseModel.php

<?php

namespace App\Models;
use Dcat\Admin\Traits\HasDateTimeFormatter;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;

class BaseModel extends Model
{
	use HasDateTimeFormatter;

	protected $host = '';

	public function __construct(array $attributes = [])
	{
		parent::__construct($attributes);
		$this->host = env('APP_URL');
	}

	//默认按id desc排序
	protected static function booted()
	{
		static::addGlobalScope('orderById', function (Builder $builder) {
			$builder->orderBy((new static())->getTable().'.id', 'desc');
		});
	}
}